Only about one-third of motor-driven motion systems use gearing, even though gearheads benefit size-constrained applications and those running at 1,000 rpm or less. Other advantages of using a gearhead with a servomotor abound.

The correct phase sequence is required for the proper operation of any three phase system. It ensures that the load works as desired, when incorrect, the equipment such as the motor may malfunction, rotate in the reverse direction.